\documentclass{article}
\usepackage[backend=biber,style=authoryear]{biblatex}
\addbibresource{biblatex-examples.bib}
\addbibresource{local1.bib}
\addbibresource{../../../test/features/completions/local2.bib}

\begin{document}

\cite{aristotle:physics}

\cite[5--10]{gaonkar}

\cite[see][5--10]{baez/article}

\parencite{doody}

\parencite[5--10]{local2}

\parencite[see][5--10]{piccato}

\textcite{westfahl:frontier}

\textcite[5--10]{salam}

\textcite[see][5--10]{wilde}

\end{document}
